Olive oil-tuned broadband conjugated polymer laser medium

Patent metadata

Field	Value
Publication number	US-12095222-B2
Application number	US-202318096185-A
Country	US
Kind code	B2
Filing date	Jan 12, 2023
Priority date	Jan 12, 2023
Publication date	Sep 17, 2024
Grant date	Sep 17, 2024

Abstract

The olive oil-tuned broadband conjugated polymer laser medium includes the conjugated polymer known as poly ((9,9-dihexyl-9H-fluorene-2,7-vinylene)-co-(1-methoxy-4-(2-ethylhexyloxy)-2,5-phenylenevinylene)) or “Poly(FV-co-MEHPV)” at a 90:10 mole ratio. The emission wavelength of the olive oil tuned broadband conjugated polymer laser can be reversibly tuned between 500 nm and 680 nm.

First claim

We claim:

1. A method of producing an olive oil-tuned broadband conjugated polymer laser medium, comprising the steps of:
providing poly ((9,9-dihexyl-9H-fluorene-2,7-vinylene)-co-(1-methoxy-4-(2-ethylhexyloxy)-2,5-phenylenevinylene));
providing a compound of olive oil as a dye material; and
dissolving the poly ((9,9-dihexyl-9H-fluorene-2,7-vinylene)-co-(1-methoxy-4-(2-ethylhexyloxy)-2,5-phenylenevinylene)) in the compound of olive oil under heat and continuous stirring to obtain a homogenous solution, wherein the homogenous solution is excited under a pulsed laser source having a λ ex =355 nm, wherein the compound of olive oil is CH 3 (CH 2 ) n COOH where n is a number between 12 and 22.

2. The method of producing an olive oil-tuned broadband conjugated polymer laser medium of claim 1 , wherein said homogenous solution of poly ((9,9-dihexyl-9H-fluorene-2,7-vinylene)-co-(1-methoxy-4-(2-ethylhexyloxy)-2,5-phenylenevinylene)) and the compound of olive oil as a dye material is prepared by dissolving the poly ((9,9-dihexyl-9H-fluorene-2,7-vinylene)-co-(1-methoxy-4-(2-ethylhexyloxy)-2,5-phenylenevinylene)) of the compound of olive oil with the aid of heat and continuous stirring.

3. The method of producing an olive oil-tuned broadband conjugated polymer laser medium of claim 2 , wherein a solubility of the poly ((9,9-dihexyl-9H-fluorene-2,7-vinylene)-co-(1-methoxy-4-(2-ethylhexyloxy)-2,5-phenylenevinylene)) increases with increasing temperature.

4. The method of producing an olive oil-tuned broadband conjugated polymer laser medium as recited in claim 1 , wherein a third harmonic of 355 nm of an Nd: YAG laser is used as an excitation source.

5. The method of producing an olive oil-tuned broadband conjugated polymer laser medium according to claim 4 , wherein a UV laser was focused by a quartz cylindrical lens of a focal length of 5 cm.

6. The method of producing an olive oil-tuned broadband conjugated polymer laser medium as recited in claim 1 , wherein absorption spectrum of the conjugated polymer in the compound of olive oil occurs at five bands of 421, 450, 535, 610, and 670 nm, respectively.

7. An olive oil-tuned broadband conjugated polymer laser medium, comprising a mixture of:
poly ((9,9-dihexyl-9H-fluorene-2,7-vinylene)-co-(1-methoxy-4-(2-ethylhexyloxy)-2,5-phenylenevinylene)); and
a compound of olive oil as a dye material,
wherein the poly ((9,9-dihexyl-9H-fluorene-2,7-vinylene)-co-(1-methoxy-4-(2-ethylhexyloxy)-2,5-phenylenevinylene)) is dissolved in the compound of olive oil under heat and continuous stirring to obtain a homogenous solution, wherein the homogenous solution is excited under a pulsed laser source having a λ ex =355 nm, and wherein the poly ((9,9-dihexyl-9H-fluorene-2,7-vinylene)-co-(1-methoxy-4-(2-ethylhexyloxy)-2,5-phenylenevinylene)) and the compound of olive oil solution is prepared by dissolving the poly ((9,9-dihexyl-9H-fluorene-2,7-vinylene)-co-(1-methoxy-4-(2-ethylhexyloxy)-2,5-phenylenevinylene)) in the compound of olive oil with the aid of heat and continuous stirring, wherein the compound of olive oil is CH 3 (CH 2 ) n COOH where n is a number between 12 and 22.

8. The method of producing an olive oil-tuned broadband conjugated polymer laser medium as recited in claim 1 , wherein tunability depends on the concentration of the poly ((9,9-dihexyl-9H-fluorene-2,7-vinylene)-co-(1-methoxy-4-(2-ethylhexyloxy)-2,5-phenylenevinylene)).

9. The method of producing an olive oil-tuned broadband conjugated polymer laser medium as recited in claim 1 , wherein a fluorescence spectrum of the conjugated polymer showed four bands at 505, 535, 577, and 680 nm, respectively.

10. The method of producing an olive oil-tuned broadband conjugated polymer laser medium as recited in claim 1 , wherein the pulsed laser source is capable of working in both a pulsed and continuous wave modes.

Assignees

• Imam Mohammad Ibn Saud Islamic Univ

Inventors

• Idriss Hajo Idriss Mohammed
• Ali Mohammed Khalil Mohammed
• Aldaghri Osamah Abdulrahman
• Ahmed Khalid Hassan Ibnaouf
• Mohammed Moez Abdolfath Ibrahem

Classifications

• H01S3/1121

  Harmonically mode locking lasers, e.g. modulation frequency equals multiple integers or a fraction of the resonator roundtrip time · CPC title

• H01S3/0092

  Nonlinear frequency conversion, e.g. second harmonic generation [SHG] or sum- or difference-frequency generation outside the laser cavity (nonlinear frequency conversion per se G02F1/35) · CPC title

• H01S3/1643

  YAG · CPC title

• H01S3/109

  Frequency multiplication, e.g. harmonic generation · CPC title

• H01S3/1611

  neodymium · CPC title